RT Journal Article
T1 CARMENES input catalogue of M dwarfs VIII. Kinematics in the solar neighbourhood
A1 Cortés Contreras, Miriam
A1 Caballero, J. A.
A1 Montes Gutiérrez, David
A1 Cardona-Guillén, C.
A1 Béjar, V. J. S.
A1 Cifuentes, C.
A1 Tabernero, H. M.
A1 Zapatero Osorio, M. R.
A1 Amado, P. J.
A1 Seifert, W.
AB Aims. Our goals are to characterise the kinematic properties and to identify young and old stars among the M dwarfs of the CARMENES input catalogue.Methods. We compiled the spectral types, proper motions, distances, and radial velocities for 2187 M dwarfs. We used the public code SteParKin to derive their galactic space velocities and identify members in the different galactic populations. We also identified candidate members in young stellar kinematic groups, with ages ranging from 1 Ma to 800 Ma with SteParKin, LACEwING, and BANYAN Σ. We removed known close binaries and performed an analysis of kinematic, rotation, and activity indicators (rotational periods and projected velocities, Hα, X-rays, and UV emission) for 1546 M dwarfs. We defined five rotation-activity-colour relations satisfied by young (τ ≲ 800 Ma) stars.Results. We identified 191 young M dwarf candidates (∼12%), 113 of which are newly recognised in this work. In this young sample, there are 118 very active stars based on Hα emission, fast rotation, and X-ray and UV emission excess. Of them, 27 have also strong magnetic fields, 9 of which are likely younger than 50 Ma. Additionally, there are 87 potentially young stars and 99 stars with a dubious youth classification, which may increase the fraction of young stars to an astounding 24%. Only one star out of the 2187 exhibits kinematics typical of the old Galactic halo.Conclusions. A combined analysis of kinematic and rotation-activity properties provides a robust method for identifying young M dwarfs from archival data. However, more observational efforts are needed to ascertain the true nature of numerous young star candidates in the field and, perhaps more importantly, to precisely quantify their age.
PB EDP Sciences
SN 0004-6361
YR 2024
FD 2024
LK https://hdl.handle.net/20.500.14352/122900
UL https://hdl.handle.net/20.500.14352/122900
LA eng
NO Cortés-Contreras, M., Caballero, J. A., Montes, D., Cardona-Guillén, C., Béjar, V. J., Cifuentes, C., ... & Seifert, W. (2024). CARMENES input catalogue of M dwarfs-VIII. Kinematics in the solar neighbourhood. Astronomy & Astrophysics, 692, A206.
NO Artículo firmado por 18 autores.
NO Max Planck Society
NO Consejo Superior de Investigaciones Cientificas (España)
NO Gobierno de España
NO European Union
NO German Research Foundation (DFG)
NO Klaus Tschira Stiftung
NO Junta de Andalucía (España)
NO State of Baden-Wuerttemberg
NO State of Niedersachsen
NO Instituto de Astrofísica de Andalucía (España)
NO La Palma in the Observatorio del Roque de los Muchachos (Comunidad Autónoma de las Islas Canarias)
NO Institut de Ciencies de l'Espai (CSIC)
NO Ministerio de Ciencia e Innovación (España)
NO Comunidad de Madrid (España)
NO European Regional Development Fund
NO European Union NextGeneration
DS Docta Complutense
RD 24 dic 2025